Impact water-wheel.



7 PATENTED APR. 14,, 1 908. W. A. DOB'LE & F. GPELLER.

IMPACT W ATERWHEBL.

APPLICATION nun R0121, 190v. Y "2 snnms-snnm 1.

UNITED STATES PATENT OFFICE.

WILLIAM ASHTON DOBLE AND FREDERICK GFELLER, OF SAN FRANCISCO, CALIFORNIA, ASSIGNORS, BY MESNE ASSIGNMENTS, TO-MAY E. DOBLE, OF ALAMEDA, CALIFORNIA.

IMPACT WATER-WHEEL.

Specification of Letters Patent.

Patented April 14, 1908.

To all whom it may concern:

Be it known that we, WILLIAM ASHTON DOBLE and FREDERICK GFELLER, citizens of the United States, residing in the city and county of San Francisco, State of California, have invented. certain new and useful Improvements in Impact Water Wheels, of which the followin is a specification.

Our invention re ates to water motors, and more particularly to that class of water motors in which an impact wheel provided with buckets is rotated under the action of a water jet, and our invention consists more particularly in the construction of the buckets and means of attachment to the body of the wheel, and also to improvements in the said body, as fully set forth hereinafter and as illustrated in the accompanying drawing, in

which Figure 1 is a side view of part of the body Fig. 6 illustrates the manner in which buckets having central ears may be used in connection with the body portion of'improved form.

The body A of the wheel is suitaby formed and has a peripheral construction adapted for the attachment of the buckets B which, as shown, are twin buckets. In the preferred construction illustrated in Figs. 1, 2 and 3, the body A has at the periphery two parallel flanges 3, 3, separated for the reception between them of the perforated ears or lugs upon the buckets. Each bucket is provided with forward and rear perforated ears C, D. Each of these ears may be centrally arranged so that they will extend between the flanges 3, 3, as shown in Fig. 6, where they are secured by cross bolts E, each bucket being secured by two cross-bolts as usual, but in the preferred constructionone of the ears of each bucket is centrally arranged, as for instance the ear C, while there are two parallel separated ears D. The central car may, as shown, be at the forward part of the bucket and the parallel ears may be at the back, or this arrangement may be reversed, but in either case the central ear extends between the flanges, 3, 3, and the separated parallel ears receive the flanges between them as best shown in Fig. 2 but the parts are so arranged that the central ear of each bucket has its erforations axially in line with those of t e parallel ears of the next contiguous bucket so that a single bolt E passes through the arallel ears of one bucket and the centra ear of the other bucket, each bolt thus bolting the ears of contiguous buckets and the center of the wheel together, so that in fact there is substantially only the same number of bolts as there are buckets, but each bucket is secured to the center or body by two ears. By this arrangement also the lateral separated parallel ears secure a wide base bearing for each bucket, while the distance between the front and the rear ears is much greater than is possible where each'bucket is secured by two bolts independent of those of the contiguous buckets, as in Fig. 6, and a longer base is thus attained. By roviding the body A with separated paral el flanges 3, 3, greater stiffness and strength is secured, but in some instances the body may have a single annular flange 4, Fig. 5, and each bucket may have two pairs of ears 6, 6, 7, 7, as shown in Figs. 4 and 5, one pair receiving between them the flange 4 while the other pair receives between them the ears 7, 7.

By the arrangement of a plurality of ears, those of one bucket receiving between them those of the other, the strain resulting from centrifugal force is practically about midway between the two bolts which secure each bucket and distributed equally on the two when the jet is off the bucket. When the jet is on the bucket the strain will be nearly uniform on the two bolts because of they 'wider base afforded. This base on the eriphery of the rim is more than twice t at secured by the usual arrangement of bearing points. While the buckets are rigidly secured to the wheel the bolts are more accessible by means of wrenches than in the usual arrangement and more buckets can be placed on the wheel. Further it will be seen that the rear ears extend independently from the back of the bucket so that there is no body of metal between them, thus improving the structural features of the casting, but in order to secure additional bracing and greater strength these ears may be connected by a cross piece F.

By decreasing the number of bolts each bolt can be made larger, securing a greater factor of safety in fastening the buckets, and any desired amount of metal can be embodied in the lugs, and as the surface pres sure upon the bolts is equalized the bending action of the strains thereon is reduced.

By the above arrangement we are enabled to make wheels of smaller diameter securing higher speeds, while it will be seen the buckets form one continuous chain, that is, each bucket is linked to the adjacent ones and they thus take up much of the strain which would otherwise be imparted to the wheel body.

I/Vithout limiting ourselves to the construction and arrangement shown, we claim:

1. In an impact wheel the combination of the wheel body and a series of buckets each with a plurality of ears, and bolts arranged each to engage coinciding ears of two contiguous buckets.

2. The combination with the body and cross-bolts of an impact wheel, of buckets each provided with forward and rear ears, the forward and rear ears of contiguous buckets connected by the same bolt.

3. The combination with the body of an impact wheel, of buckets each provided with forward and rear perforated ears, the perforations of the rear ears of the buckets axially in line with those of the forward ears of the contiguous buckets, and cross-bolts connecting the buckets to the body.

4. The combination with the body of an impact wheel, of buckets each having at separated points, one in advance of the other, a central and two parallel perforated ears, the perforations of the central ear of each bucket axially in line with those of the parallel ears of the contiguous bucket, and bolts passing transversely through said perforations and through the body.

5. The combination in an. impact wheel of a body, buckets each having a central ear, and two separated parallel ears, the central ear of each bucket extending between and transversely in line with the parallel ears of the contiguous bucket, and cross-bolts passing through the ears and body.

6. The combination in an impact wheel, of a body having at the periphery two parallel separated flanges, and buckets each having an ear fitting between the flanges, and two separated ears arranged to receive the flanges between them, and cross bolts passing througl'i the ears and flanges.

7. The combination with the body of ad impact motor, of buckets each with a central ear and with two parallel separated ears at the back of the bucket, and cross-bolts each passing through. the central ear of one bucket and the separated ears of the next bucket.

8. The combination with the body of an impact motor, of buckets each with a central ear and with two parallel separated ears at the back of the bucket, and a cross-bar connecting the parallel ears.

9. A bucket for impact wheels haying a central perforated ear and two parallel perforated ears arranged as and for the purpose specified.

10. A bucket for impact wheels having a central perforated ear and two parallel perforated ears, and a cross-bar between the la tter ears as set forth.

In testimony whereof we al'lix our signatures in presence of two witnesses.

WILLIAM ASHTON DOBLE.

FREDERICK GF EIJIJIG It.

itnesses:

HARRY J. LASK, CHAS. H. Siurrn. 

